even the big apple circus, gives you the sense of the state boston is in. there is a preponderance of caution as you can imagine. wasn't to che i want to check in with don lemon -- i should say postponed, not canceled -- who is in watertown right now. tell us what you've been witnessing over the last couple of minutes. >> anderson, i've never seen anything like this domestically. i've been witnessing thousands upon thousands of police officers, hundreds upon hundreds of police officers here going door to door, searching every single home. and i've been seeing as you'll see now, fire trucks, rescue units, tactical vans, armored vehicles, massive police presence, go in and out of this area. i've seen the perimeter move from neighborhood to neighborhood. and it has gotten closer to us every single moment here. and there you go, you see the watertown fire department rushing off to some place. and behind them, an unmarked police vehicle. and that's been the scene here really throughout this morning and throughout the entire evening here. we got to witness severa